Title:
電気機械的トランスデューサおよび電気装置
Document Type and Number:
Japanese Patent JP2007505543
Kind Code:
A
Abstract:
The electromechanical transducer (1) has a resonator element (20) and an actuator (30) for inducing an elastic deformation of the resonator element (20) dependent on the electrical input signal. For temperature stabilization, the electromechanical transducer (1) has a sensing element (40) for providing an electrical sensing signal has a function of a temperature of the resonator element (20), and a heating element (50) for heating the resonator element to reduce the temperature dependent frequency deviation to keep the resonance frequency equal to the nominal frequency at operating temperature. The heating element (50) is controlled by an electrical heating signal based on the electrical sensing signal. The resonator element may have the hating element or the sensing element; it may be part of a wheatstone bridge; it may consist of two longitudinally extendable parts (201, 202) extending in opposite directions, being attached in a support area (204) in a deformation free part (203).
Inventors:
Joseph, T.M.Fan, Bake
Peter, H. Steeneken
Peter, H. Steeneken
Application Number:
JP2006525935A
Publication Date:
March 08, 2007
Filing Date:
August 23, 2004
Export Citation:
Assignee:
Koninkuryuke Philips Electronics N.V.
International Classes:
H03H9/24; B81B3/00; H03H9/02; H03L1/04
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki